Tech companies flock to Miami to reach Latin America.

MIAMI—This city is well known for its coastline, club scene and condo-building crazes. Now it is adding a new distinction: tech hub.

A startup scene is stirring here, driven in part by U.S. companies seeking to tap Latin America's expanding technology market and a growing crop of Latin American entrepreneurs hoping to gain a foothold here.

"We are the logical point to be the technology capital of Latin America,"...